import sys
from PyQt5.QtWidgets import QMainWindow,QAction,qApp,QApplication
from PyQt5.QtGui import QIcon

class Example(QMainWindow):
    def __init__(self):
        super().__init__()
        self.initUI()

    def initUI(self):

        exitAction=QAction(QIcon('Security.png'),'&Exit',self)
        exitAction.setShortcut('Ctrl+Q')
        exitAction.setStatusTip('Exit application')
        exitAction.triggered.connect(qApp.quit)

        self.statusBar()

        menubar=self.menuBar()
        fileMenu=menubar.addMenu('&File')

        fileMenu.addAction(exitAction)

        self.setGeometry(300,300,300,200)
        self.setWindowTitle('Menubar')
        self.show()

if __name__=='__main__':
    app=QApplication(sys.argv)
    ex=Example()
    sys.exit(app.exec_())

